JP3083534U - Fan scrubber and deodorizing apparatus using the same - Google Patents

Abstract

(57) [Problem] To provide a deodorizing treatment apparatus by a cleaning method capable of reducing installation space, equipment cost, and running cost. SOLUTION: A plurality of baffle plates 20 are attached to the inner surface of a casing 31 of a blower equipped with a fan 32, and an odorous gas and a chemical solution or water are brought into contact with each other to chemically remove odor components in the odorous gas. A fan scrubber having a function of blowing or treating the processing gas to the next step while simultaneously treating or dissolving and deodorizing the same, and a mist catcher which is disposed downstream of the fan scrubber and has a chemical solution or water storage part at the bottom. And a mechanism for circulating and supplying a chemical solution or water stored in the mist catcher to the fan scrubber.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a fan scrubber and a deodorizing apparatus using the same. More specifically, the present invention has both a blowing function and a cleaning and deodorizing function, and is applied to a chemical or water cleaning type deodorizing treatment apparatus, thereby eliminating installation space, reducing equipment costs, and reducing running costs. The present invention relates to a fan scrubber capable of reducing the amount of gas, and a cleaning type deodorizing apparatus using the fan scrubber.

[0002]

[Prior art]

 Offensive odor gives a person discomfort and disgust, and is one of sensory pollution. Complaints about odors are classified into seven types of pollution: air pollution, noise, odor, water pollution, vibration, soil pollution, and land subsidence. It is almost at the level of the shoulder. For the creation of a comfortable environment, odor control is an important keyword along with air pollution control and noise control. In recent years, complaints about foul odors have been increasing in places related to urban life, such as sewage treatment, waste disposal, pet odors, and scent of tap water. It is becoming a living type.

[0003] Odorous substances have been diversified and compounded year by year, and the importance of odor prevention measures has been further increased in consideration of the future construction of a recycling-based society. In Japan, 22 substances are specified as “specific odor substances” for substances regulated by the Odor Control Law, and each of these substances has its own regulation value. As a specific example, the regulated values at the boundary of the business site are 1-5 ppm for ammonia and 0.02-0.2 ppm for hydrogen sulfide. In addition, even if the numerical value is below the standard value of the concentration regulation of offensive odor substances, there may be a deviation from the actual odor damage perceived by the residents in the neighboring area. For this reason, a law amendment in 1996 has led to the adoption of an olfactory measurement method (sensory test method) for determining the odor due to human olfaction, in addition to the concentration regulation.

[0004] As techniques for removing odors from odorous gases, (1) chemical treatment, (2) physical treatment, (3) functional treatment, (4) biological treatment, and the like are known. Among these odor removal treatment techniques, the chemical treatment of (1) above can be roughly classified into a cleaning method and a combustion method, and the cleaning methods include acid treatment, alkali treatment, sodium hypochlorite, and excess treatment. There are chemical cleaning methods such as treatment with oxidizing agents such as hydrogen oxide, ozone, chlorine dioxide, and potassium permanganate, and gas-liquid contact effectively removes water-soluble odor components such as ammonia, hydrogen sulfide, and methyl mercaptan. And deodorize. On the other hand, the combustion method includes a direct combustion method and a catalytic combustion method.

[0005] In the chemical cleaning method, a device shown in Fig. 1 and the like are conventionally used as a typical deodorizing treatment device. FIG. 1 is a schematic explanatory view of an example of a deodorizing treatment apparatus conventionally used in a chemical cleaning method. The deodorizing treatment apparatus 15 includes, as main components, a chemical cleaning tower 1, a blower 2, and a mist catcher. 3 is comprised. In the chemical cleaning tower 1, the chemical stored in the chemical storage tank 4 is supplied to the upper part of the chemical cleaning tower 1 through the circulation line 6 by the circulation pump 5 and sprinkled, and the odorous gas A of the gas to be treated is supplied. Is introduced into the lower part of the chemical washing tower 1 and comes into gas-liquid contact with the chemical solution to remove odor components. The cleaning gas from which the odor component has been removed passes through the gas line 7 and the drain pot 8, and is further supplied to the mist catcher 3 via the blower 2. The chemical treatment gas is supplied to the activated carbon adsorption tower (not shown) of the next step through the ventilator 10 after the chemical mist in the gas is removed in the mist catcher 3.

The chemical 9 stored in the lower part of the mist catcher 3 is returned to the chemical storage tank 4 through the return line 11. Further, the new chemical solution B is continuously or intermittently supplied to the chemical solution storage tank 4 so that the chemical solution therein has a certain range of odor component removal performance (neutralization performance, oxidation performance, etc.). The symbol C is a waste chemical. However, in such a conventional deodorizing treatment apparatus using a chemical cleaning method, there are problems such as high equipment costs, a considerable equipment space requirement, and high running costs for inspection of equipment and the like.

[0007]

[Problems to be solved by the invention]

 The present invention solves the problem of the conventional chemical liquid cleaning deodorizing apparatus, and provides a deodorizing apparatus capable of reducing installation space, equipment costs, and running costs. It is intended for.

[0008]

[Means for Solving the Problems]

 As a result of intensive studies to achieve the above object, the present inventors have provided a plurality of baffles on the inner surface of the casing of the blower equipped with the fan, and brought the odorous gas into contact with the chemical or water in the blower. By doing so, the gas-liquid contact efficiency can be improved and the odor components in the odorous gas can be effectively removed, so that the conventional chemical cleaning tower can be omitted and the object can be achieved. The present invention was completed based on this finding.

That is, the present invention provides: (1) an odorous gas is brought into contact with a chemical solution or water to chemically treat or dissolve odorous components in the odorous gas and to deodorize the odorous gas; A fan scrubber having a function of blowing air to a process, wherein a plurality of baffle plates are attached to an inner surface of a casing of a blower to which a fan is attached; A rectangular plate-shaped pedestal having its parts joined together, and a rectangular plate-shaped main body portion detachably surface-bonded to the pedestal, and at least a joining edge of the plate-shaped pedestal with the inner surface of the casing, (1) The fan scrubber according to the above (1), which has one notch for drainage. (3) The above (1) or (2), which has an ability to process odorous gas of 10 to 150 m ³ / min. The file A scrubber, and (4) a fan scrubber according to the above (1), (2) or (3), a mist catcher disposed downstream of the fan scrubber and having a chemical solution or water storage section at a lower portion, and storage in the mist catcher. A deodorizing treatment device having a mechanism for circulating and supplying the chemical solution or water to the fan scrubber.

[0010]

[Embodiment of the invention]

 In the fan scrubber of the present invention, a plurality of baffles are attached to the inner surface of the casing of the blower in which the fan is mounted, and a chemical solution or water [hereinafter abbreviated as a chemical solution (water)]. This is a device that has a mechanism that has both a washing and deodorizing function and a blowing function. This baffle plate generates turbulence in the odorous gas flowing into the blower by the rotation of the fan, improves the contact efficiency with the chemical solution (water), and effectively removes the odorous components in the odorous gas. It has a function to perform.

The fan scrubber of the present invention is manufactured by attaching a plurality of baffle plates to the inner surface of the casing by using a blower 2 in a conventional deodorizing apparatus using a chemical cleaning method as shown in FIG. can do.

In the present invention, the baffle plate comprises a rectangular plate-shaped pedestal whose edge is joined to the inner surface of the casing, and a rectangular plate-shaped main body detachably joined to the pedestal. It is preferable that the plate-shaped pedestal is provided with at least one notch for drainage at an edge of the plate-shaped pedestal joined to the inner surface of the casing. The shape and size of the cut-out portion for draining water are not particularly limited as long as the cut-out portion has a shape and size that can escape without storing a chemical solution (water). Examples of the shape include a semicircle, a triangle, a square, and a U-shape. There is no particular limitation on the number of cutouts for drainage, but usually about 2 to 4 is sufficient.

FIG. 2 is a plan view of an example of the baffle plate in the fan scrubber of the present invention. The baffle plate 20 has a rectangular shape in which three semicircular notches 24 are provided at an edge 23. A rectangular plate-shaped main body 22 is detachably surface-bonded to the plate-shaped pedestal 21 by bolts 25. The baffle plate 20 is joined to the inner surface of the casing of the blower such that the respective baffle plates are parallel to the casing width direction with the edge 23 of the plate-shaped pedestal 21. In this manner, the baffle plate body can be replaced by surface-removably joining the baffle plate body to the plate-shaped pedestal, so that the baffle plate body can be replaced due to corrosion or the like, and the length of the baffle plate can be reduced. Can be easily adjusted.

In the present invention, the width of the baffle plate (in FIG. 2, symbol W) is determined by the casing width of the blower. That is, when a baffle plate is attached to the inner surface of the casing, the width is preferably such that both ends of the baffle plate are each separated by about 10 mm from the end surfaces of both sides of the casing. In addition, the length (in FIG. 2, symbol L) depends on the processing capacity of the fan scrubber. For example, when the processing capacity is 30 to 40 m ³ / min, the length of the baffle is preferably in the range of 50 to 70 mm. When the processing capacity is about 100 m ³ / min, the length of the baffle is 70 to 90 mm. Is preferred.

When the baffle plate is mounted on the inner surface of the casing, it is desirable that the baffle plate be mounted such that the length of the baffle plate increases with the rotation direction of the fan. In this case, baffles having different lengths within the above range may be mounted so that the lengths are sequentially increased in accordance with the rotation direction of the fan, or a plurality of baffles having different lengths within the above range are provided. They may be divided into groups and mounted so that their lengths increase stepwise according to the rotation direction of the fan. As a specific example of dividing the baffle plate into a plurality of groups by length, when the processing capacity of the fan scrubber is 30 to 40 m ³ / min, for example, three groups of (a) 50 mm, (b) 60 mm, and (c) 70 mm When the processing capacity is about 100 m ³ / min, it can be divided into three groups, for example, (a) 70 mm, (b) 80 mm, and (c) 90 mm. The number of baffles attached to the inner surface of the casing is usually about 10 to 18 pieces. The thickness of each of the plate-shaped pedestal and the plate-shaped main body constituting the baffle plate is preferably about 4 to 6 mm.

In the present invention, the baffle plate is attached to the inner surface of the casing at an angle of preferably 10 to 70 °, more preferably 20 to 70 °, and still more preferably 40 to 65 ° with respect to the axis of the fan scrubber. Is advantageous.

FIG. 3 is an explanatory view showing an example of a state in which a baffle plate is attached to the inner surface of the casing of the blower in the fan scrubber of the present invention. The groups a, b, and c (each having different lengths) The length of the baffles in the group is the same.) A total of 14 baffles 20 in the three groups are mounted on the inner surface of the casing 31 at an angle of 60 ° with respect to the axis and shifted by 15 °. It shows the state where it was turned on. The length of the baffle is longer in the order of group a <b group <c group. That is, the length of the baffle plate 20 increases stepwise according to the rotation direction of the fan 32. In addition, 33 is a rotation axis of the fan.

FIG. 4 is a perspective view showing an example of the fan scrubber of the present invention in which a baffle plate is attached to the inner surface of the casing and an example of a fan mounted in the casing. In the figure, reference numeral 31 denotes a blower casing, 20 denotes a baffle plate, and 32 denotes a fan.

In the fan scrubber of the present invention, the material of the baffle (pedestal, main body) is not particularly limited as long as it has appropriate rigidity and corrosion resistance. For example, SS, stainless steel, FRP (Fiber reinforced plastic) or the like can be used. When the casing is made of SS or stainless steel, it is preferable to use a baffle made of SS or stainless steel from the viewpoint that joining by welding is possible. When the casing is made of a plastic such as polyvinyl chloride, it is preferable to use a baffle made of FRP and join with an adhesive. The processing capacity of the fan scrubber of the present invention is generally in the range of 10 to 150 m ³ / min, preferably in the range of ³⁰ to 100 m ³ / min.

Next, the deodorizing treatment device of the present invention includes the above-described fan scrubber, a mist catcher disposed downstream of the mist scrubber, and having a chemical liquid (water) storage section at a lower portion, and a chemical liquid stored in the mist catcher. Water) to the fan scrubber.

FIG. 5 is a schematic explanatory view of one example of the deodorizing treatment device of the present invention. The deodorizing treatment device 40 is constituted by a fan scrubber 41 and a mist catcher 42 as main devices. The chemical solution (water) stored in the lower chemical solution (water) storage section 43 of the mist catcher 42 is supplied to the fan scrubber 41 through the water spraying device 45 by the circulation pump 44, and the odorous gas A of the gas to be treated. Is introduced into the fan scrubber 41 through the water sprinkling device 45, and comes into gas-liquid contact with a chemical solution (water) to remove odor components. The cleaning gas from which the odor component has been removed is supplied to the mist catcher 42 by the blowing mechanism of the fan scrubber 41 together with the chemical solution (water). In the mist catcher 42, the chemical solution (water) is stored in the storage section 43, and is circulated and supplied to the fan scrubber 41 through the water spray device 45 by the circulation pump 44 as described above. On the other hand, the cleaning gas is supplied to an activated carbon adsorption tower (not shown) through a ventilator 46.

The chemical (water) storage section 43 of the mist catcher 42 is configured so that the chemical (water) therein has a certain range of odor component removal performance (neutralization performance, oxidation performance, dissolution performance, etc.). , A new chemical solution (water) B 'is supplied continuously or intermittently. Symbol C 'is a waste chemical (water).

As described above, the deodorizing treatment apparatus of the present invention uses a fan scrubber having both a blowing function and a cleaning and deodorizing function, thereby eliminating the need for a chemical cleaning tower in a conventional chemical cleaning method. It is possible to reduce installation space, equipment cost, and running cost.

In the fan scrubber and the deodorizing treatment device of the present invention, a chemical solution or water is used for cleaning the odorous gas. Examples of the chemical solution include an acid aqueous solution containing an acid such as hydrochloric acid and sulfuric acid, an alkaline aqueous solution containing an alkali such as sodium hydroxide, sodium hypochlorite, hydrogen peroxide, ozone, chlorine dioxide, and potassium permanganate. An oxidizing agent-containing aqueous solution containing an oxidizing agent can be used, and it is appropriately selected according to the type of the odor component in the odorous gas.

For example, when ammonia or trimethylamine is contained as the odor component, an acidic aqueous solution is effective, and when it contains hydrogen sulfide, methyl mercaptan, or methyl sulfide, an alkaline aqueous solution and an oxidizing agent aqueous solution are effective.

[0026]

【Example】

 Next, the present invention will be described in more detail with reference to examples. Example 1 As shown in FIG. 2, a stainless steel plate-shaped base (thickness: 5 mm) provided with three semicircular cutouts at the edge portions was provided. (5 mm) were freely detachably surface-bonded with a bolt to prepare 14 baffle plates. The breakdown of this baffle is as follows. a group: 5 sheets with a width (W) of 130 mm and a length (L) of 50 mm b group: 4 sheets with a width (W) of 130 mm and a length (L) of 60 mm c group: a width (W) of 130 mm and a length ( L) 5 sheets of 70mm

Next, as shown in FIG. 3, on the inner surface of a casing (width 150 mm) of a stainless steel blower (processing capacity 40 m ³ / min), the baffle plates are sequentially arranged in groups a, b and c. A total of 14 sheets were welded at an angle of 60 ° with respect to the axis and shifted by 15 °. In addition, the joining by welding is such that the edge of each baffle plate where the notch is provided abuts against the inner surface of the casing, and each edge is parallel to the width direction of the casing, and both ends of the casing are parallel to each other. They were arranged so that they were separated by 10 mm from the end faces on both sides. Thus, the fan scrubber of the present invention was manufactured.

Test Example 1 As cleaning solutions, (1) well water (ph 7.6), (2) an alkaline aqueous solution adjusted to pH 10.0 with sodium hydroxide, and (3) an acidic aqueous solution adjusted to pH 2.0 with hydrochloric acid And (4) After adjusting the pH to 11.0 by adding sodium hydroxide to water, an aqueous NaOCl solution was prepared by adding a sodium hypochlorite solution so that the effective chlorine concentration became 300 ppm. Using the fan scrubber manufactured in Example 1, the odorous gas containing the odor components shown in Table 1 and the cleaning liquid were supplied to the fan scrubber at a speed of 39 m ³ / min and 5 L / min, respectively, to remove the odor components. Processing was performed. Table 1 shows the results.

[0029]

[Table 1]

[0030]

[Effect of the invention]

 The fan scrubber of the present invention can be easily manufactured by providing a baffle plate on an inner surface of a casing of a blower in a conventional deodorizing treatment apparatus using a chemical cleaning method. This fan scrubber has both a ventilation function and a cleaning and deodorizing function.Therefore, in a deodorizing treatment device using the fan scrubber, the chemical cleaning tower conventionally used is not required, and the installation space can be reduced. In addition, equipment costs and running costs can be reduced.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view of one example of a conventionally used deodorizing treatment device in a chemical cleaning method.

FIG. 2 shows one of the baffles in the fan scrubber of the present invention.
It is a top view of an example.

FIG. 3 is an explanatory view showing an example of a state in which a baffle plate is attached to an inner surface of a casing in the fan scrubber of the present invention.

FIG. 4 is a perspective view showing an example of a fan scrubber of the present invention in which a baffle is attached to an inner surface of a casing and an example of a fan mounted in the casing.

FIG. 5 is a schematic explanatory view of one example of the deodorizing treatment device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Chemical liquid washing tower 2 Blower 3 Mist catcher 4 Chemical liquid storage tank 5 Circulation pump 8 Drain pot 9 Chemical liquid 10 Ventilator 15 Conventional deodorization processing apparatus 20 Baffle plate 21 Plate base 22 Plate main body part 23 Edge part 24 Notch part 25 Bolt 31 Casing 32 Fan 33 Rotating shaft 40 Deodorizing treatment device 41 of the present invention 41 Fan scrubber 42 Mist catcher 43 Chemical liquid (water) storage unit 44 Circulation pump 45 Sprinkler device 46 Ventilator A Odorous gas B New chemical solution B 'New chemical solution (Water) C Waste Chemical solution C 'Waste chemical solution (water)

Claims (4)

[Utility model registration claims] 1. Contacting an odorous gas with a chemical solution or water,
A fan scrubber having a function of chemically treating or dissolving odor components in the odorous gas to deodorize the odorous gas and sending the treated gas to the next step, wherein a plurality of fan scrubbers are provided on an inner surface of a casing of a blower equipped with a fan. A fan scrubber characterized by attaching a baffle plate. 2. A baffle plate comprising: a rectangular plate-shaped pedestal having an edge joined to an inner surface of a casing; and a rectangular plate-shaped main body removably surface-bonded to the pedestal. At least one edge is attached to the edge of the pedestal that joins the inner surface of the casing.
2. The fan scrubber according to claim 1, wherein two drainage notches are provided. 3. The fan scrubber according to claim 1, wherein the fan scrubber has an ability to process an odorous gas of 10 to 150 m ³ / min. 4. The fan scrubber according to claim 1, 2 or 3, a mist catcher disposed downstream of the fan scrubber and having a chemical solution or water storage portion at a lower portion, and a chemical solution or water stored in the mist catcher. A deodorizing treatment device comprising a mechanism for circulating and supplying the fan scrubber.